Pretty much agree.
My pair of balas are peaceful to the other fish but give chase to each other, playfully. But like my other fish, they also adopt the behavior of whoever is the most aggressive at feeding time. This includes going after small guppies, ghost shrimp, and devouring them if they catch them. However, I think this behavior would be quite different if they were the kings of the tank and only were around smaller fish.
I think neons or similar size fish would be fine.